yep it happended
Thread Starter
Junior Member
Joined: Sep 2018
Posts: 27
Likes: 2
From: Tauranga,New Zealand
Car: 89 IROC Z
Engine: 5.7ltr
Transmission: Hurst 400
yep it happended
yep it happened the old girl overheated
,the fan that is supposed to kick in when she gets warm didnt kick in DOH!
just realised as well there is a fan that should be on all the time (i think)is that correct? or should both fans be going all the time? ,but nah that wasnt happening either hopefully havnt cooked it, im new to this non Japanese world
,the fan that is supposed to kick in when she gets warm didnt kick in DOH!
just realised as well there is a fan that should be on all the time (i think)is that correct? or should both fans be going all the time? ,but nah that wasnt happening either hopefully havnt cooked it, im new to this non Japanese world Last edited by ROONEY; Dec 29, 2019 at 10:33 PM. Reason: better english
Thread Starter
Junior Member
Joined: Sep 2018
Posts: 27
Likes: 2
From: Tauranga,New Zealand
Car: 89 IROC Z
Engine: 5.7ltr
Transmission: Hurst 400
Re: yep it happended
Ive taken the radiator out because it ended up blowing a hole and have checked the fans, one dosent work at all and the other one( which was connected with an adjustable switch), the sensor had broken inside the radiator hose so that one didnt go.Would having 2 12 inch fans on a sensor switch so they both came on at the same time be to efficient and end up turning on and off all the time ?Its quite nice here 15 to 27 deg celcius at the moment and in the winter i dont go out if its not warmer than double figures
Joined: Nov 2002
Posts: 6,642
Likes: 403
From: Oyth
Car: 89RS vert
Engine: Erod
Transmission: 4L65e
Axle/Gears: BW, 3.27
Re: yep it happended
Two 12" fans running simultaneously should be more than adequate.You wire them up most any way you want. It was about 70 deg F today in So.cal.
Supreme Member




Joined: May 2015
Posts: 1,765
Likes: 286
From: Florida
Car: 1991 Z28
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 3:42 Auburn
Re: yep it happended
Both my fans are wired to an ignition on circuit. When you turn the key on both fans turn on and run all the time. This was done this way when I purchased the car so not sure how they did it although there is a ground wire spliced in the fan relay circuit. It may take my car an extra couple minutes to warm up but the temp always holds steady and never goes over 200 on the gauge when idling with the A/C on. Not sure if Rock Auto ships to your part of the world but I did replace both the fan motors ( about $25 each) for peace of mind.
Thread Starter
Junior Member
Joined: Sep 2018
Posts: 27
Likes: 2
From: Tauranga,New Zealand
Car: 89 IROC Z
Engine: 5.7ltr
Transmission: Hurst 400
Re: yep it happended
Hey thanks for that its good to know,i might try that to start with and if she dosent warm up fast enough then ill go with the adjustable fans after all we dont all live in sunny Florida
Supreme Member
Joined: Jul 1999
Posts: 5,183
Likes: 42
From: Oakdale, Ca
Car: 89 IrocZ
Engine: L98-ish
Transmission: 700R4
Re: yep it happended
So, give some info...share what you know.
I can tell you this...IF no one effed with the car (but seems they did) the primary fan will turn on at 235...or 232 degrees, I forget. Secondary fan comes on with AC (both fans run) or at 242 degrees.
So don't be non-descriptive in a request for assistance, many here can help, but why would I run to get my manual if you don't provide basic info.?
I can tell you this...IF no one effed with the car (but seems they did) the primary fan will turn on at 235...or 232 degrees, I forget. Secondary fan comes on with AC (both fans run) or at 242 degrees.
So don't be non-descriptive in a request for assistance, many here can help, but why would I run to get my manual if you don't provide basic info.?
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Thread Starter
Junior Member
Joined: Sep 2018
Posts: 27
Likes: 2
From: Tauranga,New Zealand
Car: 89 IROC Z
Engine: 5.7ltr
Transmission: Hurst 400
Re: yep it happended
wooh you must be having a bad day,what i know is on testing the fans the one that is supposed to kick in first is actually stuffed ie dosent go ,and the second fan had been changed to an adjustable thermostat but the sensor had actually broken inside the hose so that baby didnt work either,the a/c dosent work thats a whole new thing to look at
Last edited by ROONEY; Jan 2, 2020 at 03:08 PM. Reason: more infomation
Joined: Dec 2005
Posts: 4,795
Likes: 15
From: St. Cloud, MN
Car: 1984 Trans Am
Engine: LS1383 in work
Transmission: Magnum F - to be installed
Axle/Gears: Zexel Torsen 3.73, 28-spline mosers
Re: yep it happended
Since both of your fans are out, I'd seriously consider swapping out to 4th gen fans. A little cutting on the shroud to get it to fit but they're superb at keeping the engine cool on my car. Wiring is otherwise identical.
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